Cameroceras ("chambered horn") was a genus of giant orthocone cephalopods that lived in the Ordovician period. The Ordovician period is the second of the six (seven in North America) periods of the Paleozoic era. ... Image File history File links Metadata No higher resolution available. ... The conservation status of a species is an indicator of the likelihood of that species continuing to survive either in the present day or the future. ... FOSSIL is a standard for allowing serial communication for telecommunications programs under DOS. FOSSIL is an acronym for Fido Opus Seadog Standard Interface Layer. ... Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. ... For other uses, see Animal (disambiguation). ... Classes Caudofoveata Aplacophora Polyplacophora - Chitons Monoplacophora Bivalvia - Bivalves Scaphopoda - Tusk shells Gastropoda - Snails and Slugs Cephalopoda - Squids, Octopuses, etc. ... Orders Subclass Nautiloidea †Plectronocerida †Ellesmerocerida †Actinocerida †Pseudorthocerida †Endocerida †Tarphycerida †Oncocerida †Discosorida Nautilida †Orthocerida †Ascocerida †Bactritida Subclass †Ammonoidea †Goniatitida †Ceratitida †Ammonitida Subclass Coleoidea †Belemnoidea †Aulacocerida †Belemnitida †Hematitida †Phragmoteuthida Neocoleoidea (most living cephalopods) ?†Boletzkyida Sepiida Sepiolida Spirulida Teuthida Octopoda Vampyromorphida The cephalopods (Greek plural (kephalópoda); head-foot) are the mollusk class... Orders Palcephalopoda †Plectronocerida †Ellesmerocerida †Actinocerida †Pseudorthocerida †Endocerida †Tarphycerida †Oncocerida †Discosorida Nautilida Neocephalopoda (in part) †Orthocerida †Ascocerida †Bactritida Nautiloids are a group of marine mollusks in the subclass Nautiloidea, which all possess an external shell, the best-known example being the modern nautiluses. ... families †Proterocameroceratidae †Piloceratidae †Endoceratidae The endocerids were a diverse group of cephalopods that lived during the Middle Ordovician to Late Silurian periods. ... Timothy Abbott Conrad (1803 - 1877 was an American geologist, malacologist and crustacean researcher. ... 1842 was a common year starting on Saturday (see link for calendar). ... An orthocone is a usually long straight shell of a nautiloid cephalopod. ... Orders Subclass Nautiloidea †Plectronocerida †Ellesmerocerida †Actinocerida †Pseudorthocerida †Endocerida †Tarphycerida †Oncocerida †Discosorida Nautilida †Orthocerida †Ascocerida †Bactritida Subclass †Ammonoidea †Goniatitida †Ceratitida †Ammonitida Subclass Coleoidea †Belemnoidea †Aulacocerida †Belemnitida †Hematitida †Phragmoteuthida Neocoleoidea (most living cephalopods) ?†Boletzkyida Sepiida Sepiolida Spirulida Teuthida Octopoda Vampyromorphida The cephalopods (Greek plural (kephalópoda); head-foot) are the mollusk class... The Ordovician period is the second of the six (seven in North America) periods of the Paleozoic era. ...

The partial shell of one giant Cameroceras yielded a total length estimated at the time at nearly 30 feet. (This estimate has since been revised downward quite a bit.) Nevertheless, this gargantuan cephalopod was one of the largest animals ever to live during the Ordovician period, if not the largest. As a result of its huge size, it was likely an apex predator that lived in deeper water (it would possibly have been unable to maneuver in shallow water), and probably fed on eurypterids such as Megalograptus, large trilobites, and smaller cephalopods. "Walking With Monsters" fancifully suggests that it was largely blind, having large, yet feeble eyes. Orders †Stylonuroidea Diener, 1924 †Eurypteroidea Burmeister, 1843 The eurypterids (sea scorpion) were the largest known arthropods that ever lived (with the possible exception of the Arthropleurids). ... Megalograptus is a four-foot long Ordovician eurypterid, and was among the earliest known genera. ...

In Popular Culture

It was featured in the Ordovician section of the BBC series Sea Monsters (a spin-off to the successful Walking with Dinosaurs) as the top predator, and also had a brief cameo in Walking with Monsters, bobbing in the water. In the Walking with Dinosaurs companion books, it is misspelled as "Cameraceras". The British Broadcasting Corporation, which is usually known as the BBC, is the largest broadcasting corporation in the world in terms of audience numbers, employing 26,000 staff in the United Kingdom alone and with a budget of more than GB£4 billion. ... The Sea Monsters beastiary. ... The factual accuracy of part of this article is disputed. ... Walking with Monsters (also distributed as Before the Dinosaurs: Walking With Monsters) is a three-part British documentary film series about life in the Paleozoic, bringing to life extinct arthropods, fish, amphibians, synapsids, and reptiles. ... The factual accuracy of part of this article is disputed. ...

See also

• Cephalopod size

The giant squid (Architethis sp. ...

References

• Haines, Tim, & Chambers, Paul. 2005. The Complete Guide to Prehistoric Life. BBC Books, London.
• Sweet, Walter C. Cephalopoda--General Features in Treatise on Invertebrate Paleontology, Part K, Mollusca 3. Geological Society of America, and University of Kansas Press. Page K5.
• Teichert, Curt. 1964. Endoceratoidea in Treatise on Invertebrate Paleontology, Part K, Mollusca 3. Geological Society of America, and University of Kansas Press. Page K174.